Elektro-Automatik EL 9080-170 B Betriebsanleitung Seite 187

4.3.3.1 Calibrating the set values
► How to calibrate the voltage
1.
Adjust the connected voltage source to approx. 102% of the maximum
voltage specified for the EL device. For the example with an 80 V EL
this would be 81.6 V for the source. Set the current limitation of the
voltage source to 5% of the nominal current specified for EL device, for
this example it is 8.5 A. Check again, that for voltage calibration, the
sensing connector on the rear of the device is not connected.
2.
In the display, tap MENU, then „General Settings", then go to Page 7
and then tap START.
3.
In the next screen select: Voltage calibration, then Calibrate input value and NEXT. The load will switch
the DC input on and start to measure the input voltage (U-mon).
4.
The next screen requests you to enter the measured input voltage at Measured value= from the multimeter.
Enter it using the keypad, that appears when tapping the value. Assure yourself the value is correct and
submit with ENTER.
5.
Repeat point 4. for the next three steps (total of four steps).
► How to calibrate the current
1.
Adjust the current source to approx. 102% nominal current of the EL device, for the sample model with
170 A this would be 173.4 A, rounded to 174 A. Make sure the source can provide more current than the EL
can draw, else the source's voltage will collapse. Set the output voltage of the current source to 10% of the
nominal voltage specified for EL, in the example 8 V, and switch the DC output of the source on.
2.
In the display, tap MENU, then „General Settings", then go to Page 7 and then tap START.
3.
In the next screen select: Current calibration, then Calibrate input value and NEXT. The load will switch
on the DC input and start to measure (I-mon).
4.
The next screen requests you to enter the input current Measured value= measured with the shunt. Enter
it using the keypad, assure yourself the value is correct and submit with ENTER.
5.
Repeat point 4. for the next three steps (total of four steps).
4.3.3.2 Calibrating the remote sensing
In case you are generally using the remote sensing feature (Sense), it is recommended to readjust this parameter
too, for best results. The procedure is identical to the calibration of voltage, except for it requires to have the sens-
ing connector on the rear to be plugged and connected with correct polarity to the DC input of the EL.
► How to calibrate the remote sensing voltage
1.
Adjust the connected voltage source to approx. 102% of the maximum voltage specified for the EL device.
For example with an 80 V EL this would be 81.6 V for the source. Set the current limitation of the voltage
source to 5% of the nominal current specified for EL device, for this example it is 8.5 A. Check again, that
for voltage calibration, the sensing connector on the rear of the device is connected.
2.
In the display, tap MENU, then „General Settings", then go to Page 7 and then tap START.
3.
In the next screen select: Sense volt. calibration, then Calibrate input value and NEXT.
4.
The next screen requests you to enter the measured sensing voltage Measured value= from the multimeter.
Enter it using the keypad, that appears when tapping the value. Assure yourself the value is correct and
submit with ENTER.
5.
Repeat point 4. for the next three steps (total of four steps).
4.3.3.3 Calibrating the actual values
Actual values of the input voltage (with and without remote sensing) and the input current are calibrated almost
the same way as the set values, but here you don't need to enter anything, but just confirm the displayed values.
Please proceed the above steps and instead of "Calibrate input value" select "Calibrate actual val." in the sub-
menus. After the device shows the measured values on display, wait at least 2s for the measured value to settle
and then tap NEXT until you are through all steps.
EA Elektro-Automatik GmbH
Helmholtzstr. 31-37 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
EL 9000 B Series
www.elektroautomatik.de
ea1974@elektroautomatik.de
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